Proper maintenance of four belts and one wheel

(1) The track keeps proper tension

If the tension is too high, the spring tension of the idler pulley acts on the track pin and the pin sleeve, and the outer circle of the pin and the inner circle of the pin sleeve are constantly subject to high tension.
Extrusion stress, premature wear of the pin and pin sleeve during operation, and the elastic force of the idler tensioning spring also acts on the idler shaft and sleeve, resulting in a large surface contact stress, which makes the idler sleeve easy to grind into a semicircle , the track pitch is easy to lengthen, and it will reduce the mechanical transmission efficiency and waste the power transmitted from the engine to the drive wheel and track.

If the track is too loosely tensioned, the track will easily disengage from the idlers and rollers, and the track will lose proper alignment, making running
The track fluctuation, flapping and impact will cause abnormal wear of the idler and idler.
The tension of the track is adjusted by adding butter to the oil filling nozzle of the tension cylinder or releasing the butter from the oil discharge nozzle. Refer to each model.
To adjust the standard clearance. When the pitch of the track segments is elongated to the point where a set of track segments needs to be removed, the meshing surface of the drive wheel tooth surface and the pin sleeve will also be abnormally worn. The sleeve is turned over, the excessively worn pins and pin sleeves are replaced, and the track joint assembly is replaced.

(2) Keep the guide wheel position aligned

The misalignment of the guide wheel has a serious impact on other parts of the walking mechanism, so adjust the distance between the guide wheel guide plate and the track frame.
Backlash (correction of misalignment) is the key to prolonging the life of the running gear. When adjusting, use the shim between the guide plate and the bearing to correct it. If the gap is large, remove the shim: if the gap is small, increase the shim. Standard clearance is 0. 5~ 1.0 mm, the maximum allowable
The gap is 3.0 mm.

(3) Turn the track pin and pin sleeve over at the appropriate time

During the wear process of the track pin 5 pin sleeve, the track pitch is gradually elongated, resulting in poor engagement between the drive wheel and the pin sleeve.
The damage of the pin sleeve and the abnormal wear of the tooth surface of the driving wheel will cause meandering, flapping and impact, which will greatly shorten the life of the traveling mechanism. When the pitch cannot be restored by adjusting the tension, it is necessary to turn over the belly belt pins and pin sleeves to obtain the correct belly belt pitch. There are two ways to determine the time when the track pin and the pin sleeve are turned over: one method is to determine the time when the track pitch is elongated by 3mm; the other method is to determine the time when the outer diameter of the pin sleeve is worn by 3mm.

(4) Tighten the bolts and nuts in time

When the bolts of the walking mechanism are loose, they are easily broken or lost, causing a series of failures. Daily maintenance should be checked
The following bolts: mounting bolts for rollers and idlers, mounting bolts for drive gear blocks, mounting bolts for track shoes, mounting bolts for roller guards, and mounting bolts for diagonal brace heads. Refer to the instruction manual of each model for the tightening torque of the main bolts.

(5) Timely lubrication

The lubrication of the traveling mechanism is very important. Many roller bearings are "burned to death" and the fee is not timely due to oil leakage.
Find. It is generally believed that the following 5 places may leak oil: due to poor or damaged O-ring between the retaining ring and the shaft, oil leaks from the outer side of the retaining ring and the shaft; due to poor contact of the floating seal ring or O-ring defect, the Oil leaks between the outer side of the ring and the rollers (supporting rollers, guide rollers, driving wheels); due to the poor O-ring between the rollers (supporting rollers, guide rollers, driving wheels) and the bushing, from the bushing and the Oil leaks between the rollers; oil leaks at the filler plug due to loose filler plug or damage to the seat hole sealed by the conical plug; oil leaks between the cover and the roller due to poor O-rings. Therefore, you should pay attention to checking the above parts at ordinary times, and add and replace them regularly according to the lubrication cycle of each part.

(6) Check for cracks

The cracks of the traveling mechanism should be checked in time, and repaired and strengthened in time.


Post time: Aug-16-2022